Have a HP Pavillion xh485-I have the AC adaptor plugged in along with battery in, after turning on laptop (OS/Win XP Pro) will be on for 10 mins or more and will power off battery lite is on but moving mouse around etc does nothing have to use power button to turn back on. Have reset power supply and was in process of formatting drive and reinstalling OS but won't stay on. Any help would be appreciated. Thanks, brneyesga